Panasonic DMR-ES30VEG Service Manual

Also see for DMR-ES30VEB: Quick start guide Operating instructions

Contents

1 INTRODUCTIONThis service manual contains technical information which willallow service personnel to understand and service thesemodels.Please place orders using the parts list and not the drawingreference numbers.1. This service manual does not contain the followinginformation, because of the impossibility of servicing atcomponent level.· Schematic Diagram, Block Diagram and P.C.B. layoutof Digital P.C.B.· Parts List for individual parts of Digital P.C.B.· Exploded View and Parts List for individual parts of RAMdrive.2. The following categories are recycling module part. Pleasesend them to Central Repair Center.· Digital P.C.B.:DMR-ES30VEB: RFKBES30VEBDMR-ES30VEC: RFKBES30VECDMR-ES30VEG: VEP79104F· RAM Drive: VXY18673. If the circuit is changed or modified, this information will befollowed by supplement service manual to be filed withoriginal service manual.4. Adjustment procedures, Disassembly Procedures andAssembly Procedures for VCR Mechanism Chassis areseparate volume from this service manual. Please refer tothe service manual for R4 Mechanism Chassis for EUROmodel (MAD0403002C2).2 SAFETY PRECAUTIONS2.1. GENERAL GUIDELINES1. Be careful during removing metal parts, sharp edges.2. When servicing, observe the original lead dress. If a shortcircuit is found, replace all parts which have beenoverheated or damaged by the short circuit.3. After servicing, see to it that all the protective devices suchas insulation barriers, insulation papers shields are properlyinstalled.4. After servicing, make the following leakage current checksto prevent the customer from being exposed to shockhazards.2.1.1. LEAKAGE CURRENT COLDCHECK1. Unplug the AC cord and connect a jumper between the twoprongs on the plug.2. Measure the resistance value, with an ohmmeter, betweenthe jumpered AC plug and each exposed metallic cabinetpart on the equipment such as screw heads, connectors,control shafts, etc. When the exposed metallic part has areturn path to the chassis, the reading should be between1MΩ and 5.2MΩ.When the exposed metal does not have a return path tothe chassis, the reading must be infinity.Figure 12.1.2. LEAKAGE CURRENT HOT CHECK1. Plug the AC cord directly into the AC outlet. Do not use anisolation transformer for this check.2. Connect a 1.5kΩ, 10 watts resistor, in parallel with a 0.15μFcapacitors, between each exposed metallic part on the setand a good earth ground such as a water pipe, as shown inFigure 1.3. Use an AC voltmeter, with 1000 ohms/volt or moresensitivity, to measure the potential across the resistor.4. Check each exposed metallic part, and measure thevoltage at each point.5. Reverse the AC plug in the AC outlet and repeat each of theabove measurements.6. The potential at any point should not exceed 0.75 voltsRMS. A leakage current tester (Simpson Model 229 orequivalent) may be used to make the hot checks, leakagecurrent must not exceed 1/2 milliampere. In case ameasurement is outside of the limits specified, there is apossibility of a shock hazard, and the equipment should berepaired and rechecked before it is returned to thecustomer.5DMR-ES30VEG / DMR-ES30VEC / DMR-ES30VEB